Very good, it worked. Friends run this command as Administrator, for example when you type in command, then right click on command and run as administrator, and then run as an administrator and follow the steps mentioned above.

Hello sir when i try to run "sc delete OracleServiceXE" on cmd then massage print 'sc' is not recognize as internal and external command plz help me at this momemt. my g-mail id is "govindsharmacs@gmail.com"